Fix coverage results when source contains class_eval

Author: bjfish

.mspec.constants

@@ -41,6 +41,7 @@ ComparisonTest
 ConstantSpecsIncludedModule
 ConstantVisibility
 Coverage
+CoverageSpecs
 CustomArgumentError
 DRb
 DRbIdConv

library/coverage/fixtures/eval_code.rb

@@ -0,0 +1,11 @@
+5 + 5
+
+module CoverageSpecs
+
+  class_eval <<-RUBY, __FILE__, __LINE__ + 1
+    attr_reader :ok
+  RUBY
+
+end
+
+4 + 4

library/coverage/result_spec.rb

@@ -5,11 +5,13 @@
   before :all do
     @class_file = fixture __FILE__, 'some_class.rb'
     @config_file = fixture __FILE__, 'start_coverage.rb'
+    @eval_code_file = fixture __FILE__, 'eval_code.rb'
   end
 
   after :each do
     $LOADED_FEATURES.delete(@class_file)
     $LOADED_FEATURES.delete(@config_file)
+    $LOADED_FEATURES.delete(@eval_code_file)
   end
 
   it 'gives the covered files as a hash with arrays of count or nil' do
@@ -75,4 +77,16 @@
     require @config_file.chomp('.rb')
     Coverage.result.should_not include(@config_file)
   end
+
+  it 'returns the correct results when eval is used' do
+    Coverage.start
+    require @eval_code_file.chomp('.rb')
+    result = Coverage.result
+
+    result.should == {
+        @eval_code_file => [
+            1, nil, 1, nil, 1, nil, nil, nil, nil, nil, 1
+        ]
+    }
+  end
 end